[dpdk-stable] [PATCH] kni: fix compilation on RHEL 8.3

[Ferruh Yigit]

On 11/26/2020 6:04 PM, David Marchand wrote:
> On Thu, Nov 26, 2020 at 3:24 PM Olivier Matz <olivier.matz at 6wind.com> wrote:
>>
>> Like what was done for mainline kernel in commit 38ad54f3bc76 ("kni: fix
>> build with Linux 5.6"), a new parameter 'txqueue' has to be added to
>> 'ndo_tx_timeout' ndo on RHEL 8.3 kernel.
>>
>> Cc: stable at dpdk.org
>>
>> Tested-by: Christophe Grosse <christophe.grosse at 6wind.com>
>> Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
> 
> Reproduced issue on a RHEL 8.3 with kernel 4.18.0-240.el8.x86_64.
> FAILED: kernel/linux/kni/rte_kni.ko
> make -j4 -C /lib/modules/4.18.0-240.el8.x86_64/build
> M=/root/dpdk/build/kernel/linux/kni src=/root/dpdk/kernel/linux/kni
> 'MODULE_CFLAGS=-include /root/dpdk/config/rte_config.h
> -I/root/dpdk/lib/librte_eal/include -I/root/dpdk/lib/librte_kni
> -I/root/dpdk/build -I/root/dpdk/kernel/linux/kni' modules
> make: Entering directory '/usr/src/kernels/4.18.0-240.el8.x86_64'
>    CC [M]  /root/dpdk/build/kernel/linux/kni/kni_net.o
>    CC [M]  /root/dpdk/build/kernel/linux/kni/kni_misc.o
> /root/dpdk/kernel/linux/kni/kni_net.c:791:20: error: initialization of
> ‘void (*)(struct net_device *, unsigned int)’ from incompatible
> pointer type ‘void (*)(struct net_device *)’
> [-Werror=incompatible-pointer-types]
>    .ndo_tx_timeout = kni_net_tx_timeout,
>                      ^~~~~~~~~~~~~~~~~~
> /root/dpdk/kernel/linux/kni/kni_net.c:791:20: note: (near
> initialization for ‘kni_net_netdev_ops.<anonymous>.ndo_tx_timeout’)
> cc1: some warnings being treated as errors
> make[1]: *** [scripts/Makefile.build:315:
> /root/dpdk/build/kernel/linux/kni/kni_net.o] Error 1
> make: *** [Makefile:1544: _module_/root/dpdk/build/kernel/linux/kni] Error 2
> make: Leaving directory '/usr/src/kernels/4.18.0-240.el8.x86_64'
> ninja: build stopped: subcommand failed.
> 
> 
> 
>> ---
>>   kernel/linux/kni/compat.h | 4 +++-
>>   1 file changed, 3 insertions(+), 1 deletion(-)
>>
>> diff --git a/kernel/linux/kni/compat.h b/kernel/linux/kni/compat.h
>> index d515b27669..5f65640d5e 100644
>> --- a/kernel/linux/kni/compat.h
>> +++ b/kernel/linux/kni/compat.h
>> @@ -131,7 +131,9 @@
>>   #define HAVE_IOVA_TO_KVA_MAPPING_SUPPORT
>>   #endif
>>
>> -#if KERNEL_VERSION(5, 6, 0) <= LINUX_VERSION_CODE
>> +#if KERNEL_VERSION(5, 6, 0) <= LINUX_VERSION_CODE || \
>> +       (defined(RHEL_RELEASE_CODE) && \
>> +        RHEL_RELEASE_VERSION(8, 3) <= RHEL_RELEASE_CODE)
>>   #define HAVE_TX_TIMEOUT_TXQUEUE
>>   #endif
>>
>> --
>> 2.25.1
>>
> 
> Tested-by: David Marchand <david.marchand at redhat.com>
> Thanks.
> 

Thanks David for testing.

Acked-by: Ferruh Yigit <ferruh.yigit at intel.com>